PA Mainline Canal
Outlet Lock at Columbia, PA
4/17/12
Land wall looking towards river

A Mainline Canal
Outlet Lock at Columbia, PA
4/17/12
Land wall looking towards basin

A Mainline Canal
Outlet Lock at Columbia, PA
///4/1/85
River end of land wall at lower gate pocket looking towards river

PA Mainline Canal
Outlet Lock at Columbia, PA
4/21/85
Land wall looking towards basin

PA Mainline Canal
Outlet Lock at Columbia, PA
4/21/85
Upper end of land wall
Note: Railroad signal bridge mostly obscured by trees in upper left background locating lock

PA Mainline Canal
Outlet Lock at Columbia, PA
4/21/85
Upper gate pocket

PA Mainline Canal
Outlet Lock at Columbia, PA
4/21/85
Looking towards river

PA Mainline Canal
Outlet Lock at Columbia, PA
Postcard view of canal at Columbia looking south
Note: The piers of the bridge in the background are still in the river, just upstream of the concrete arch bridge. The lock and basins are very apparent.

Map of Columbia canal basin & outlet locks
This is an earlier map of the Columbia Basin. North is at the top. It shows a series of two outlet locks to the river, whereas later views indicate only one.
Note that a railroad (probably the Reading) runs between the abutment and first pier of the bridge across the river and then north to the west side of the basin. Also, after reaching river level, an embankment extends down river to the bridge with the outlet passing under the second span. Later views eliminate this as well as the second lock, probably due to flood damage. The lock in the photos is probably at the site of the upper lock in the map.

PA Mainline Canal
Outlet Lock at Columbia, PA
Close-up postcard view of outlet lock at Columbia looking south
Note the old bridge in the background

PA Mainline Canal
Postcard view of canal basin at Columbia looking north.
Coal piles are on river side of basin.
In later canal years, the Reading Railroad brought coal down its branch line for loading into canal boats which then crossed the river to navigate down the S & T Canal to Chesapeake Bay and Baltimore markets.